Adjustable fly-screen.



J. J. LYNN.

ADJUSTABLE FLY SCREEN.

APPLICATION FILED APR. 13. 1911.

1,236,580. I Patnted Aug. 14,1911.

I Z/ 7 O 7'? I (3'2 22 Ill/l/Il/Ifi 3 o f/ .{j

' To all whom it may concern:

which the following is a. specification.

JOSEPH JAMES LYNN, OF MOOSE J AW, SAQKATCHEWAN, CANADA.

ADJUSTABLE FLY-SCREEN.

gpecification of Letters Patent. I

Application filed April 13, 1917. Serial No. 161,839.

provement in Ad ustable Fly-Screens, of

The present invention relates to screens adapted particularly for attachment to windows and the like, for excluding flies and insects.

An object of the present invention is to provide a fly screen for attachment 'to windowswhich is of such peculiar construction as to admit of the raising and lowering of the sash of the window .to any desired height, and at the same time sealing the screen in the window.

Another .objectof the present-invention is to provide a screen which is adapted to windows varying in width and to provide the screen with improved means for securing the screen in position without the use of nails, screws or other devices which must be permanently secured through the window frames.

The invention further aims at the provision of a novel construction of screen of the extensible type wherein the separate overlapping frames thereof are peculiarly interlocked and sealed together and against the window casing and the adjacent sash.

The above, and various other objects and advantages of this invention will be in part described, and in 'part understood, from the following detailed description of the present preferred embodiment, the same being illustrated in the wherein:

Figure 1 is an outer side elevation of the lower portion of a window having a screen constructed according tothe present invention applied thereto. r

' Fig. 2 is a top edgeview of the screen detached from the window.

Fig. 3 is a fragmentary enlarged transverse section through the screen taken on the line 33 of Fig. 1, the view showing the overlapping ends of the screen frame at Fig- 4 is a similar View taken on the l 4-4 of Fig. -1', showing the bottom portions of the overlapping screen frame.

Fig. 5 is a detail sectional view taken accompanying a drawing Patented Au. ii, 1M7.

substantially vertically through one side'of the screen, showing in side elevation-the improved securing means therefor. I Fig. 6 1s a similar View disclosing amodified form of securing means for the screen.v

Referring to this drawing, A designates a window casing provided with a sill B,

I and inwhich are mounted in the" usual manner the upper and lower sashes C and D separated by the parting strip E. The window easing A is also provided at opposite sides and ad acent to its outer edge with the blind stops F, in the usual manner.

The screen of this invention comprises a pair of frames 10 and 11 which are each preferably formed of sheet metal, and which are, closed in by wire meshing 0L suitable to exclude flies and ordinary insects. The, top rails of the frames 10 and 11 are each formed of an. overturned strip of metal adapted to engage the adjacent edge of the wirelmeshing therein, and the top rail of the flame 10 is reinforced at its inner side by the overturning of the metal strip against the top rail to form a reinforcing strip 12 wlnclnis provided at its upper edge, flush with the top of the frame 10, with a laterally tuirned flange 13. The flange 13 carries a flexible strip 14 which projects inwardly insubstantially the plane of the flange l3, and whfch is secured to the flange by rivets or' the like, a bar 15 engaging across the free side of the flexible strip 14 to hOld l-lle latter to the flange 13. The outer side of the top rail of said frame 10 is provided throughou the length of the frame with an ilptlilned nd outwardly spaced locking The top trail of the frame 11 is similarly 3 formed from sheet metal which is bent substantiallv Uisha-ped to receive the adjacent edge of the, wire meshing therebetween, and which is reinforced at its innef side by an upturned reinforcing strip 17, the latter having upon ts' upper edge a downturned and inwardly l,

The outer side of the top rail of the frame upturned spacing strip .19 WhlCh 1s provi along its upper edge" 11 is reinforced by paced locking tongue 18 e3 tending throng iout the length of the frame l to .fit behind the tongue *0. The tongues 16 and 18 with afrearwardly turned flange 20 which is spaced above the top edges of the frames of a flexible strip and 11, and to which is secured a flexible strip 21 by rivets or the like,-and reinforced by a bar 22 engaging across the exposed side 21. The free edges of the flexible strips 14: and 21 terminate in substantiallythe same vertical plane and are adapted to bear against the pane of glass in the sash D of the window.

As shown inFig. 4c, the frame 10 is pro:

' vided with a bottom rail comprising a strip of sheet metal which is-overturned upon itself, and secured against the opposite sides of the adjacent edge of the wire meshing,

- and which is reinforced at its inner side by upon frame a reinforcing strip 23. comprising an overturned portion of said bottom rail. The

the tongue 25 preferably projects upwardly and in spaced relation against the inner side of the frame 11. A reinforcing or facing strip 26 is provided by the overturning of the said bottom rail of the frame 11. The tongues 2e and 25 preferably extend throughout the entire length of the frames 10 and 11 an are adapted to hold the lower portions of he frames in interlocked relation and in various adjustments.

From Figs. 2 and 3 it will be noted that i the top flanges 3 and 20 of the frames 10 and 11.

and 11 respectii ely, are of different depths, the uppermost flange 20 being adapted to extend inwardly over the tops of both of the frames 10 and lil while the flange 13 is relatively short and extends but a short distance inwardly from the inner frame 10.

This arrangeme t of flanges is for the purpose of support g the flexible strips 14: and 21 in registering relation for engagement across the outer side of the pane of glass in the window to seal the screen throughout the entire length of both' of the frames 10 As shown in Fig. 2, the flanges 14 and 20 are cut away at their outer ends to form shoulders 27 adapted to receive the parting strips E of the window casing thereagamst,

the flexible strips 14: and 21 being similarly cut away to fit snugly against the inner sides of the parting strips. It will also be noted that the flexible strips 14: and 21 are provided with inclined or beveled edges 28 at opposite outer ends to he flat against the putty or other retaining strips carried by the sash D forretaining the ane of glass therein.

In thismanner, t e screen is sealed against the window caslng, and

against the sash D placed in the casin'. and. the sash may be raised and lowered into.

, various positions without disturbing the seal between the same and the screen. As the strips 14: and 21 are flexible, the lower rail of the sash may be readily raised above the screen when it is desired to remove the latter or to pass the hand or object through the window.

The frames 10 and 11 are adapted to be slid one. upon the other to accommodate the width of the window casing A, and the outer side rails of the screen frames are adapted to lie flat against the outer faces of the partin strips E. To hold the screen firmly in this position, adjustable fasteners are employed, each fastener comprising an ear 29 secured by screws or the like to theouter faces of the frames 10 and 11 at the outer ends of the frames. oted thereto a longitudinally slotted link 30 against which slidably engages a second longitudinally slotted link 3L provided with a presser foot 32 upon. its outer end. The foot 32 is relatively flat, and is adapted to engage the inner face of the adjacent blind stop F. The links 30 and 31 aresecured in adjustable position by means Each ear 29 has piv-,

of a clamping screw 33, including a winged nut or the like which may be readily" operated by the hand. One of these fastening devices is mounted upon the outer end of each frame 10 and 11 so as to bind the opposite ends of the screen in the window casing A and against the outer side of the sash D.

In Fig. 6, a slightly modified form of fastening device for the screen is shown, the

same comprising an ear 29 secured to the outer face and adjacent each outer end of the screen, the ears 29 being adapted to rest against the inner face of the window casing A and to be secured rigidly thereto by a screw 34: or the like. Each frame 10 and 11 is provided with an attaching ear 29 at its outer end to firmly hold the opposite ends of the screen in place.

In use, it is only necessary to place the screen between the parting strips E and the blind stops F and to brace the screen against the parting strips E and the adjacent sash D by sliding the links 30 and31 of the fasteners upon each'other to engage the presser foot 32 against the inner sides of the blind stops F.

It is apparent that the sash D may be raised and lowered within the height of the screen without breaking the seal between the screen and the sash as the flexible strips carried by the screen provide a substantially continuous sealing element extending transversely betweenthe screen and the sash. The sash D may therefore be closed or opened without disturbing the adjustment of the screen. I By releasing the clamping devices 33 the fasteners may be-readily removed fromthe window casing and the screen thus collapsed and taken therefrom in a relatively short time, and Without the use of tools or the like. If the modified form of fastener shown in Fig. 6 is employed, it is only necessary to remove the screws 34: from the sides of the window casing and to thus collapse the screen and remove the same. The interlocking tongues at the top and bottom of the frames 10 and 11 securely hold the frames together and admit of their sliding upon one another, the interlocking tion without departing from the spirit thereof and being limited only by the scope of the following claims.

I claim 1. In a window screen, the combination of a pair of slidably connected frames arranged.

in overlapping relation and adapted for positioning in a window casing against the sides thereof, and sealing strips secured to the upper edges of the frame and extending inwardly toward the sash of the window, said strips conforming at opposite ends to the inner opposite sides of the sash rails and adapted to project into the sash frame against the pane of glass to admit the vertical adjustment of the sash without breaking the seal between the latter and thescreen.

2. In a window screen, the combination of a pair of frames, interlocking tongues .carried upon the upper and lower rails, of the frames for interlocking the frames in overlapping relation, means for' binding the frames in a. window casing, and a pair of overlapping flexible strips carried upon the upper edges of the frames and adapted for binding engagement 'against an adjacent sash across the entire width of the same.

3. In a window screen, the combination of a pair of frames, interlocking tongues carried upon the upper and lower rails of the frames for securing the frames in overlapping relation, said frames being adapted to fit in awindow casing between the parting strips and the blind stops thereof, and binding members carried upon the frames for engagement against the blind stops to bind the frames against the parting strips and the adjacent sash.

4. In a window screen, the combination of a pair of slidably connected frames adapted to fit in a window casing, a pair of overlapping flexible strips carried upon said frames for binding engagement against theadjacent sash, and adjustable fasteners carried upon the frames for binding engagement in the window casing to hold the screen against the sash.

5. In a window screen, the combination of a pair of slidably connected frames adapted to be fitted in a window casing, means for securing said frames in the window casing independently of the sash thereof, and flexible strips extending inwardly from the upper edges of the frames for slidable engagement with the window sash to admit of the vertical adjustment thereof independently of the window screen. T

6. In a window screen, the combination of a pair of slidably connected frames, ex-

,pansible fastening devices carried upon the outer ends of the frames for binding engagement in the opposite sides of a window casing to hold the screen therein independently of the sash, and a sealing means arranged between the frames and the adjacent sash.

7. In a window screen, the combination of a pair of sheet metal frames provided with overturned tongues upon their upper and lower edges adapted to slidably connect the frames, said frames having inclosing wire mesh portions, the top rails of the frames being provided with inwardly extending overlapping flanges, and flexible strips secured'to said flanges for binding engagement against a sash pane to admit of the vertical adjustment thereof independently of the positioning of the screen.

8. In a window screen, the combination of a pair of sheet metal frames having overturned interlocking tongues at their upper and lower edges for slidably connecting the frames, said frames being adapted to be positioned in a window casing between the parting strips and the blind stops thereof, pairs of slotted links adjustably secured in. overlapping relation, one link of each pair being pivotally connected to the outer end of each frame, and presser feet carried on the free ends of the other links.

JOSEPH JAMES LYNN. 

